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26 results for “gastropod endemism”
Figure 6 in Systematics, phylogeny, and natural history of Bullacta exarata (Philippi, 1849): an endemic cephalaspidean gastropod from the China Sea
Figure 6. Central nervous system of Bullacta exarata (BMNH 20070443; shell height = 17 mm). Notes: cpg, cerebral-pleural ganglion; gg, genital ganglion; pag, parietal ganglion; peg, pedal ganglion; sbog, suboesophageal ganglion; spog, supraoesophageal ganglion; vg, visceral ganglion; scale bar, 1 mm.
Figure 8 in Systematics, phylogeny, and natural history of Bullacta exarata (Philippi, 1849): an endemic cephalaspidean gastropod from the China Sea
Figure 8. Scanning electron microscopy images of the gut content of specimens of Bullacta exarata collected from Tahé-Kiang, China. Diatoms are the only food items present. Notes: Scale bars, (A) 10 µm; (B) 20 µm.
Figure 5 in Systematics, phylogeny, and natural history of Bullacta exarata (Philippi, 1849): an endemic cephalaspidean gastropod from the China Sea
Figure 5. Gizzard plates of Bullacta exarata. (A) View of whole gizzard with plates (MNHN, Paris; shell height (H) = 18 mm); (B) top view of the central plate (MNHN, Paris; H = 18 mm); (C) lateral view of plate (MNHN, Paris; H = 17 mm); (D) detail of elements around the edge of plate ridges (MNHN, Paris; H = 17 mm). Notes: Scale bars, (A) 1 mm; (B, C) 200 µm; (D) 100 µm.
Figure 4 in Systematics, phylogeny, and natural history of Bullacta exarata (Philippi, 1849): an endemic cephalaspidean gastropod from the China Sea
Figure 4. Jaws and radula of Bullacta exarata. (A) Jaw (MNHN, Paris; height = 17 mm); (B) radula showing the long and sharp teeth (BMNH 20070443; shell height (H) = 17 mm); (C–D) radula with white arrowheads pointing to the toothless central area (C) and base of lateral teeth (D) (MNHN, Paris; H = 14 mm). Notes: Scale bars (A, C) 10 µm; (B) 100 µm; (D) 20 µm.
Figure 1 in Systematics, phylogeny, and natural history of Bullacta exarata (Philippi, 1849): an endemic cephalaspidean gastropod from the China Sea
Figure 1. Shell of Bullacta exarata. (A–B) Neotype (MNHN 4494, Paris; shell height (H) = 17 mm); (C) scanning electron microscope detail of dorsal part of shell showing spiral grooves (MNHN, Paris; H = 17 mm); (D) internal whorl showing the absence of columella; white arrowheads pointing to the folded cord of periostracum that results from the dissolution of the columella (MNHN, Paris; H = 17 mm). Note: Scale bar, (C) 200 µm.
Figure 2 in Systematics, phylogeny, and natural history of Bullacta exarata (Philippi, 1849): an endemic cephalaspidean gastropod from the China Sea
Figure 2. Male genital system of Bullacta exarata (MNHN, Paris, shell height = 17 mm). Notes: at, atrium; bc, blind caecum; ga, genital aperture; gr1, glandular region one; gr2, glandular region two; id, inwards duct; od, outwards duct; pr, prostate; ps, penial sheath; scale bar, 1 mm.
Figure 8 in A new genus of large hydrothermal vent-endemic gastropod (Neomphalina: Peltospiridae)
Figure 8. Scatter plot of shell diameter vs. shell height across a size range of 100 specimens: A, Gigantopelta chessoia sp. nov. (line of best fit formula: y = 0.9045x −0.6278, R2 = 0.99); B, Gigantopelta aegis sp. nov. (line of best fit formula: y = 0.8823x −0.8362, R2 = 0.99).
Figure 2 in A new genus of large hydrothermal vent-endemic gastropod (Neomphalina: Peltospiridae)
Figure 2. In-situ aggregations of the two new species of Gigantopelta gen. nov.: A, Gigantopelta chessoia sp. nov. at E2 segment, East Scotia Ridge; B, Gigantopelta aegis sp. nov. at Longqi vent field, South West Indian Ridge. Scale bars = 5 cm.
Figure 5 in A new genus of large hydrothermal vent-endemic gastropod (Neomphalina: Peltospiridae)
Figure 5. Protoconchs: A, Gigantopelta chessoia sp. nov., scale bar = 100 μm; B, Gigantopelta aegis sp. nov., scale bar = 100 μm. Juvenile operculum: C, G. chessoia sp. nov., scale bar = 500 μm; D, G. aegis sp. nov., scale bar = 500 μm.
Figure 1 in A new genus of large hydrothermal vent-endemic gastropod (Neomphalina: Peltospiridae)
Figure 1. Map of deep-sea hydrothermal vent fields where Gigantopelta chessoia sp. nov. and Gigantopelta aegis sp. nov. are known to occur. This map was created using ESRI ArcMap 10.1 (ESRI 2012) and General Bathymetric Chart of the Oceans (GEBCO) Grid Display v. 2.13 (BODC 2010). Data sources: bathymetry, GEBCO; continents data, ArcWorld Supplement; oceanic ridges, United States Geologic Service. Abbreviations: A-AR, American−Antarctic Ridge; CIR, Central Indian Ridge; ESR, East Scotia Ridge; MAR, Mid Atlantic Ridge; SEIR, South East Indian Ridge; SWIR, South West Indian Ridge.
Figure 10. Haplotype parsimonious networks constructed from cytochrome c oxidase subunit I in A new genus of large hydrothermal vent-endemic gastropod (Neomphalina: Peltospiridae)
Figure 10. Haplotype parsimonious networks constructed from cytochrome c oxidase subunit I sequences of 30 specimens of: A, Gigantopelta chessoia sp. nov.; B, Gigantopelta aegis sp. nov. Open circles are represented haplotypes, number inside the circles and sizes of the circles correspond to number of individuals sharing the haplotype. Filled circles are hypothesized intermediate haplotypes that are not represented by sequences.
Figure 9. Consensus tree reconstructed from a 489 in A new genus of large hydrothermal vent-endemic gastropod (Neomphalina: Peltospiridae)
Figure 9. Consensus tree reconstructed from a 489-bp fragment of the cytochrome c oxidase subunit I gene using Bayesian inference. Node values represent Bayesian posterior probabilities.
Figure 4. A, B in A new genus of large hydrothermal vent-endemic gastropod (Neomphalina: Peltospiridae)
Figure 4. A, B, Gigantopelta chessoia sp. nov., paratype shell (NHMUK 20150067): A, aperture view; B, abaperture view. C, D, Gigantopelta aegis sp. nov., paratype shell (NHMUK 20150071): C, aperture view; D, abaperture view. Scale bars = 1 cm. Photography by Pete Bucktrout (British Antarctic Survey).
Figure 3. A−C in A new genus of large hydrothermal vent-endemic gastropod (Neomphalina: Peltospiridae)
Figure 3. A−C, Gigantopelta chessoia sp. nov., holotype (NHMUK 20150066): A, aperture view; B, umbilical view; C. aperture view; D−F, Gigantopelta aegis sp. nov., holotype (NHMUK 20150070): D, aperture view; E, umbilical view; F, aperture view. Scale bars = 1 cm. Photography by Pete Bucktrout (British Antarctic Survey).
Figure 7 in A new genus of large hydrothermal vent-endemic gastropod (Neomphalina: Peltospiridae)
Figure 7. Illustration of soft parts with the mantle partially removed: A, Gigantopelta chessoia sp. nov.; B, Gigantopelta aegis sp. nov. Scale bars = 1 cm. Abbreviations: ct, ctnidium; dg, digestive gland; eg, oesophageal gland; et, epipodial tentacles; f, foot; gd, gonad; ll, lateral lappet; o, operculum attachment; pc, pericardium; sn, snout; t, cephalic tentacles.
Figure 6 in A new genus of large hydrothermal vent-endemic gastropod (Neomphalina: Peltospiridae)
Figure 6. Radula. Overview: A, Gigantopelta chessoia sp. nov.; B. Gigantopelta aegis sp. nov.; scale bars = 100 μm. Central and lateral teeth close-up: C, G. chessoia sp. nov.; D, G. aegis sp. nov.; scale bars = 20 μm. Marginal teeth close-up: E, G. chessoia sp. nov.; F. G. aegis sp. nov.; scale bars = 10 μm.
Figure 9 in Systematics, phylogeny, and natural history of Bullacta exarata (Philippi, 1849): an endemic cephalaspidean gastropod from the China Sea
Figure 9. Geographic distribution of Bullacta exarata.
Figure 8 from: Glöer P (2013) A new freshwater snail genus (Hydrobiidae, Gastropoda) from Montenegro, with a discussion on gastropod diversity and endemism in Skadar Lake. ZooKeys 281: 69-90. https://doi.org/10.3897/zookeys.281.4409
Figure 8 - Skadar Lake basin and selected characteristic habitat types. a sublacustrine spring Karuč (the locus typicus of Karucia sublacustrina sp. n.) b spring Vitoja flooded by the lake water (December 2010) c View from NE of the lake (River Crnojevića) d View from Malo Blato with eutrophic conditions and Phragmites belt e Šasko Lake (the water of the lake comes from the Bojana River but the communication with the river and the Skadar Lake regulatly interrupred during summer months) – the locus typicus of Gyraulus shasi and Gyraulus ioanis f spring (captured for the local drinking) on the island Vranjina, the locus typicus of Radomaniola elongata. Photos. V. Pešić.
Figure 5 from: Glöer P (2013) A new freshwater snail genus (Hydrobiidae, Gastropoda) from Montenegro, with a discussion on gastropod diversity and endemism in Skadar Lake. ZooKeys 281: 69-90. https://doi.org/10.3897/zookeys.281.4409
Figure 5 - Shell: a Ancylus fluviatilis (topotype, Germany) b Ancylus recurvus (Zeta river, Montenegro).
Figure 7 from: Glöer P (2013) A new freshwater snail genus (Hydrobiidae, Gastropoda) from Montenegro, with a discussion on gastropod diversity and endemism in Skadar Lake. ZooKeys 281: 69-90. https://doi.org/10.3897/zookeys.281.4409
Figure 7 - Endemic gastropod species occurring in the Skadar Lake basin – II part. a Gyraulus meierbrooki Glöer & Pešić, 2007 b Gyraulus ioanis Glöer & Pešić, 2007 c Gyraulus shasi Glöer & Pešić, 2007 d Planorbis vitojensis Glöer & Pešić, 2010 e Radix skutaris Glöer & Pešić, 2007 f Lymnaea raphidia (Bourguignat, 1860).
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International Brain Laboratory public data
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OpenNeuro
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